1301022501 has 4 divisors (see below), whose sum is σ = 1734696672. Its totient is φ = 867348332.

The previous prime is 1301022497. The next prime is 1301022533. The reversal of 1301022501 is 1052201031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1301022501 - 2² = 1301022497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301032501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216837081 + ... + 216837086.

It is an arithmetic number, because the mean of its divisors is an integer number (433674168).

Almost surely, 2^1301022501 is an apocalyptic number.

It is an amenable number.

1301022501 is a deficient number, since it is larger than the sum of its proper divisors (433674171).

1301022501 is an equidigital number, since it uses as much as digits as its factorization.

1301022501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433674170.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1301022501 is about 36069.6895051787. The cubic root of 1301022501 is about 1091.6789491797.

Adding to 1301022501 its reverse (1052201031), we get a palindrome (2353223532).

It can be divided in two parts, 13010 and 22501, that added together give a triangular number (35511 = T₂₆₆).

The spelling of 1301022501 in words is "one billion, three hundred one million, twenty-two thousand, five hundred one".